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Issue 21, 2015
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Co-sensitization of N719 with polyphenylenes from the Bergman cyclization of maleimide-based enediynes for dye-sensitized solar cells

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Abstract

The co-sensitization of N719 with conjugated polyphenylenes for dye-sensitized solar cells (DSSCs) was demonstrated. The conjugated polyphenylenes (6-BC and 7-BC), which contain two triphenylamine (TPA) groups as electron donors and carboxylic acids as adsorption groups, were prepared from thermally triggered Bergman cyclization polymerization of two maleimide-based enediynes, 6 and 7. Both the short-circuit photocurrent density (JSC) and the open-circuit voltage (VOC) of the co-sensitized DSSCs were enhanced due to the increase in light harvesting and the retardation of electron recombination and dye aggregation when N719 was co-sensitized with the conjugated polyphenylenes. The co-sensitized (7-BC + N719) DSSC showed a high efficiency of 9.68% (VOC of 750 mV, JSC of 18.18 mA cm−2 and FF of 0.71), exhibiting an improvement of 16% compared to the devices sensitized with N719 (PCE of 8.34%) alone under identical conditions.

Graphical abstract: Co-sensitization of N719 with polyphenylenes from the Bergman cyclization of maleimide-based enediynes for dye-sensitized solar cells

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Publication details

The article was received on 13 Mar 2015, accepted on 20 Apr 2015 and first published on 21 Apr 2015


Article type: Paper
DOI: 10.1039/C5TA01861G
Citation: J. Mater. Chem. A, 2015,3, 11607-11614
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    Co-sensitization of N719 with polyphenylenes from the Bergman cyclization of maleimide-based enediynes for dye-sensitized solar cells

    L. Dong, Z. Zheng, Y. Wang, X. Li, J. Hua and A. Hu, J. Mater. Chem. A, 2015, 3, 11607
    DOI: 10.1039/C5TA01861G

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